Hello,
(Hopefully) Quick question.
We are running Cassandra 1.1.9.
I recently converted some tables from Size tiered to Leveled Compaction. The
amount of space for Bloom Filters on these tables went down tremendously (which
is expected, LCS in 1.1.9 does not use bloom filters).
However, although its far less, its still using a number of megabytes. Why is
it not zero?
Column Family: XXXX
SSTable count: 526
Space used (live): 7251063348
Space used (total): 7251063348
Number of Keys (estimate): 23895552
Memtable Columns Count: 45719
Memtable Data Size: 21207173
Memtable Switch Count: 579
Read Count: 21773431
Read Latency: 4.155 ms.
Write Count: 16183367
Write Latency: 0.029 ms.
Pending Tasks: 0
Bloom Filter False Positives: 2442
Bloom Filter False Ratio: 0.00245
Bloom Filter Space Used: 44674656
Compacted row minimum size: 73
Compacted row maximum size: 105778
Compacted row mean size: 1104
Thanks,
-Mike
